On Sat, Sep 27, 2014 at 07:10:01PM +0200, Fritjof Bornebusch wrote:
Hi,
> Hi,
>
> after usage() was called, there is no where you can go.
>
as suggested by otto@ and @nicm, the usage() functions are marked as
__dead.
> fritjof
>
fritjof
Index: ci.c
===================================================================
RCS file: /cvs/src/usr.bin/rcs/ci.c,v
retrieving revision 1.217
diff -u -p -r1.217 ci.c
--- ci.c 19 May 2014 19:42:24 -0000 1.217
+++ ci.c 1 Oct 2014 08:38:31 -0000
@@ -89,7 +89,7 @@ static void checkin_parsekeyword(char *
static int checkin_update(struct checkin_params *);
static int checkin_revert(struct checkin_params *);
-void
+__dead void
checkin_usage(void)
{
fprintf(stderr,
@@ -97,6 +97,8 @@ checkin_usage(void)
" [-j[rev]] [-k[rev]] [-l[rev]] [-M[rev]] [-mmsg]\n"
" [-Nsymbol] [-nsymbol] [-r[rev]] [-sstate] [-t[str]]\n"
" [-u[rev]] [-wusername] [-xsuffixes] [-ztz] file ...\n");
+
+ exit(1);
}
/*
@@ -221,7 +223,6 @@ checkin_main(int argc, char **argv)
break;
default:
(usage)();
- exit(1);
}
}
@@ -231,7 +232,6 @@ checkin_main(int argc, char **argv)
if (argc == 0) {
warnx("no input file");
(usage)();
- exit(1);
}
if ((pb.username = getlogin()) == NULL)
Index: co.c
===================================================================
RCS file: /cvs/src/usr.bin/rcs/co.c,v
retrieving revision 1.117
diff -u -p -r1.117 co.c
--- co.c 16 Apr 2013 20:24:45 -0000 1.117
+++ co.c 1 Oct 2014 08:38:40 -0000
@@ -79,7 +79,6 @@ checkout_main(int argc, char **argv)
if (RCS_KWEXP_INVAL(kflag)) {
warnx("invalid RCS keyword substitution mode");
(usage)();
- exit(1);
}
break;
case 'l':
@@ -141,7 +140,6 @@ checkout_main(int argc, char **argv)
break;
default:
(usage)();
- exit(1);
}
}
@@ -151,7 +149,6 @@ checkout_main(int argc, char **argv)
if (argc == 0) {
warnx("no input file");
(usage)();
- exit (1);
}
if ((username = getlogin()) == NULL)
@@ -222,13 +219,15 @@ checkout_main(int argc, char **argv)
return (ret);
}
-void
+__dead void
checkout_usage(void)
{
fprintf(stderr,
"usage: co [-TV] [-ddate] [-f[rev]] [-I[rev]] [-kmode] [-l[rev]]\n"
" [-M[rev]] [-p[rev]] [-q[rev]] [-r[rev]] [-sstate]\n"
" [-u[rev]] [-w[user]] [-xsuffixes] [-ztz] file ...\n");
+
+ exit(1);
}
/*
Index: merge.c
===================================================================
RCS file: /cvs/src/usr.bin/rcs/merge.c,v
retrieving revision 1.7
diff -u -p -r1.7 merge.c
--- merge.c 23 Jul 2010 21:46:05 -0000 1.7
+++ merge.c 1 Oct 2014 08:38:52 -0000
@@ -77,7 +77,6 @@ merge_main(int argc, char **argv)
exit(0);
default:
(usage)();
- exit(D_ERROR);
}
}
argc -= optind;
@@ -86,7 +85,6 @@ merge_main(int argc, char **argv)
if (argc != 3) {
warnx("%s arguments", (argc < 3) ? "not enough" : "too many");
(usage)();
- exit(D_ERROR);
}
for (; labels < 3; labels++)
@@ -113,9 +111,11 @@ merge_main(int argc, char **argv)
return (status);
}
-void
+__dead void
merge_usage(void)
{
(void)fprintf(stderr,
"usage: merge [-EepqV] [-L label] file1 file2 file3\n");
+
+ exit(D_ERROR);
}
Index: rcsclean.c
===================================================================
RCS file: /cvs/src/usr.bin/rcs/rcsclean.c,v
retrieving revision 1.52
diff -u -p -r1.52 rcsclean.c
--- rcsclean.c 28 Jul 2010 09:07:11 -0000 1.52
+++ rcsclean.c 1 Oct 2014 08:39:05 -0000
@@ -60,7 +60,6 @@ rcsclean_main(int argc, char **argv)
if (RCS_KWEXP_INVAL(kflag)) {
warnx("invalid RCS keyword substitution mode");
(usage)();
- exit(1);
}
break;
case 'n':
@@ -90,7 +89,6 @@ rcsclean_main(int argc, char **argv)
break;
default:
(usage)();
- exit(1);
}
}
@@ -104,7 +102,6 @@ rcsclean_main(int argc, char **argv)
if ((dirp = opendir(".")) == NULL) {
warn("opendir");
(usage)();
- exit(1);
}
while ((dp = readdir(dirp)) != NULL) {
@@ -121,12 +118,14 @@ rcsclean_main(int argc, char **argv)
return (0);
}
-void
+__dead void
rcsclean_usage(void)
{
fprintf(stderr,
"usage: rcsclean [-TV] [-kmode] [-n[rev]] [-q[rev]] [-r[rev]]\n"
" [-u[rev]] [-xsuffixes] [-ztz] [file ...]\n");
+
+ exit(1);
}
static void
Index: rcsdiff.c
===================================================================
RCS file: /cvs/src/usr.bin/rcs/rcsdiff.c,v
retrieving revision 1.79
diff -u -p -r1.79 rcsdiff.c
--- rcsdiff.c 16 Apr 2013 20:24:45 -0000 1.79
+++ rcsdiff.c 1 Oct 2014 08:40:05 -0000
@@ -117,7 +117,6 @@ rcsdiff_main(int argc, char **argv)
if (RCS_KWEXP_INVAL(kflag)) {
warnx("invalid RCS keyword substitution mode");
(usage)();
- exit(D_ERROR);
}
break;
case 'n':
@@ -184,7 +183,6 @@ rcsdiff_main(int argc, char **argv)
break;
default:
(usage)();
- exit(D_ERROR);
}
}
@@ -194,7 +192,6 @@ rcsdiff_main(int argc, char **argv)
if (argc == 0) {
warnx("no input file");
(usage)();
- exit(D_ERROR);
}
if (diff_ignore_pats != NULL) {
@@ -267,12 +264,14 @@ rcsdiff_main(int argc, char **argv)
return (status);
}
-void
+__dead void
rcsdiff_usage(void)
{
fprintf(stderr,
"usage: rcsdiff [-cnquV] [-kmode] [-rrev] [-xsuffixes] [-ztz]\n"
" [diff_options] file ...\n");
+
+ exit(D_ERROR);
}
static int
Index: rcsmerge.c
===================================================================
RCS file: /cvs/src/usr.bin/rcs/rcsmerge.c,v
retrieving revision 1.52
diff -u -p -r1.52 rcsmerge.c
--- rcsmerge.c 23 Jul 2010 21:46:05 -0000 1.52
+++ rcsmerge.c 1 Oct 2014 08:40:14 -0000
@@ -68,7 +68,6 @@ rcsmerge_main(int argc, char **argv)
if (RCS_KWEXP_INVAL(kflag)) {
warnx("invalid RCS keyword substitution mode");
(usage)();
- exit(D_ERROR);
}
break;
case 'p':
@@ -100,7 +99,6 @@ rcsmerge_main(int argc, char **argv)
break;
default:
(usage)();
- exit(D_ERROR);
}
}
@@ -110,13 +108,11 @@ rcsmerge_main(int argc, char **argv)
if (rev_str1 == NULL) {
warnx("no base revision number given");
(usage)();
- exit(D_ERROR);
}
if (argc < 1) {
warnx("no input file");
(usage)();
- exit(D_ERROR);
}
if (argc > 2 || (argc == 2 && argv[1] != NULL))
@@ -187,10 +183,12 @@ out:
return (status);
}
-void
+__dead void
rcsmerge_usage(void)
{
fprintf(stderr,
"usage: rcsmerge [-EV] [-kmode] [-p[rev]] [-q[rev]]\n"
" [-xsuffixes] [-ztz] -rrev file ...\n");
+
+ exit(D_ERROR);
}
Index: rlog.c
===================================================================
RCS file: /cvs/src/usr.bin/rcs/rlog.c,v
retrieving revision 1.67
diff -u -p -r1.67 rlog.c
--- rlog.c 7 Jan 2014 14:08:16 -0000 1.67
+++ rlog.c 1 Oct 2014 08:40:26 -0000
@@ -58,13 +58,15 @@ static char *wlist = NULL;
static char *revisions = NULL;
static char *rlog_dates = NULL;
-void
+__dead void
rlog_usage(void)
{
fprintf(stderr,
"usage: rlog [-bhLNRtV] [-ddates] [-l[lockers]] [-r[revs]]\n"
" [-sstates] [-w[logins]] [-xsuffixes]\n"
" [-ztz] file ...\n");
+
+ exit(1);
}
int
@@ -135,7 +137,6 @@ rlog_main(int argc, char **argv)
break;
default:
(usage());
- exit(1);
}
}
@@ -145,7 +146,6 @@ rlog_main(int argc, char **argv)
if (argc == 0) {
warnx("no input file");
(usage)();
- exit(1);
}
if (hflag == 1 && tflag == 1) {
Index: rcsprog.h
===================================================================
RCS file: /cvs/src/usr.bin/rcs/rcsprog.h,v
retrieving revision 1.63
diff -u -p -r1.63 rcsprog.h
--- rcsprog.h 23 Jul 2010 21:46:05 -0000 1.63
+++ rcsprog.h 1 Oct 2014 09:13:10 -0000
@@ -86,34 +86,34 @@ extern struct wklhead temp_files;
time_t date_parse(const char *);
/* ci.c */
-int checkin_main(int, char **);
-void checkin_usage(void);
+int checkin_main(int, char **);
+__dead void checkin_usage(void);
/* co.c */
-int checkout_main(int, char **);
-int checkout_rev(RCSFILE *, RCSNUM *, const char *, int, const char *,
- const char *, const char *, const char *);
-void checkout_usage(void);
+int checkout_main(int, char **);
+int checkout_rev(RCSFILE *, RCSNUM *, const char *,
+ int, const char *, const char *, const char *, const char *);
+__dead void checkout_usage(void);
/* ident.c */
int ident_main(int, char **);
void ident_usage(void);
/* merge.c */
-int merge_main(int, char **);
-void merge_usage(void);
+int merge_main(int, char **);
+__dead void merge_usage(void);
/* rcsclean.c */
-int rcsclean_main(int, char **);
-void rcsclean_usage(void);
+int rcsclean_main(int, char **);
+__dead void rcsclean_usage(void);
/* rcsdiff.c */
-int rcsdiff_main(int, char **);
-void rcsdiff_usage(void);
+int rcsdiff_main(int, char **);
+__dead void rcsdiff_usage(void);
/* rcsmerge.c */
-int rcsmerge_main(int, char **);
-void rcsmerge_usage(void);
+int rcsmerge_main(int, char **);
+__dead void rcsmerge_usage(void);
/* rcsprog.c */
int build_cmd(char ***, char **, int);
@@ -123,7 +123,7 @@ void rcs_usage(void);
void (*usage)(void);
/* rlog.c */
-int rlog_main(int, char **);
-void rlog_usage(void);
+int rlog_main(int, char **);
+__dead void rlog_usage(void);
#endif /* RCSPROG_H */
